What security alarm is best for home?

[Cobe]

Im not interested how much it costs (Monitoring fees, extra components etc. etc.) I just want to know opinions, what is best? A monitored security alarm or a bells only alarm?
Thanks, Please answer ASAP!

[Berry lee]

Maybe monitored security alarm is better for you.

[Coco]

Maybe monitored security alarm is better for you.

I think so~~

[Zac]

Maybe monitored security alarm is better for you.

What is MONITORED SECURITY ALARM actually?

[sophie hello]

I googled it, alarms are systems designed to detect unauthorized entry into a building or area. They consist of an array of sensors, a control panel and alerting system, and interconnections. Sensors detect intruders by many methods such as monitoring door and window contacts, by passive infrared motion detectors, ultrasound, vibration, electric or magnetic fields, or microwaves. Sensors may be directly wired to a control panel that provides sensor power, or may communicate wirelessly.
But I didn't find the monitored security alarm, what is it?

[Cobe]

I googled it, alarms are systems designed to detect unauthorized entry into a building or area. They consist of an array of sensors, a control panel and alerting system, and interconnections. Sensors detect intruders by many methods such as monitoring door and window contacts, by passive infrared motion detectors, ultrasound, vibration, electric or magnetic fields, or microwaves. Sensors may be directly wired to a control panel that provides sensor power, or may communicate wirelessly.
But I didn't find the monitored security alarm, what is it?

Thank you very much! But which one is best?